ZL50120 Zarlink, ZL50120 Datasheet - Page 43
ZL50120
Manufacturer Part Number
ZL50120
Description
32 / 64 / 128 Channel CESoP Processors
Manufacturer
Zarlink
Datasheet
1.ZL50120.pdf
(95 pages)
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Data Sheet
5.2
Remote Concentrator Unit
The remote concentrator application, shown in Figure 9, consists of a remote concentrators connected to the
Central Office (CO) by a dedicated fiber link running Gigabit Ethernet (GE) or Ethernet over SONET (EoS) rather
than by NxT1/E1 or DS3/E3. The remote concentrators provide both TDM service and native Ethernet service to
the Multi-Tenet Unit or Multi-Dwelling Unit (MTU/MDU).
The ZL5011x is used to emulate TDM circuits over Ethernet by establishing CESoP connections between the
remote concentrator and the CO. The native IP or Ethernet traffic is multiplexed with the CESoP traffic inside the
remote concentrator and sent across the same GE connection to the CO. At the CO the native IP or Ethernet traffic
is split from the CESoP connections at sent towards the packet network. Multiple T1/E1 CESoP connections from
several remote concentrators are aggregated in the CO using a larger ZL5011x variant, converted back to TDM
circuits, and connected to the PSTN through a higher bandwidth TDM circuit such as OC-3 or STM-1.
The use of CESoP here allows the convergence of voice and data on a single access network based on Ethernet.
This convergence on Ethernet, a packet technology, rather than SONET/SDH, a switched circuit technology,
provides cost and operational savings.
Figure 9 - Remote Concentrator Unit using CESoP
43
Zarlink Semiconductor Inc.
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